Device for cleaning boilers.



L. H. K'ETTNER.

DEVICE FOR CLEANING BOILERS.

APPLICATION FILED MAR. 25.4916.

1,261,2&8, I Patented Apr. 2, 1918.

Jmoooooocm co a citizen of the LOUIS H. KETTNER, OF NEW ROCHELLE, NEWYORK.

Specification of Letters Patent.

DEVICE FOR CLEANING BOILERS.

Patented Apr. 2, 1918.

Application filed March 25, 1916. Serial No. 86,572.

To all whom it may concern:

Be it known that I, LOUIS H. KETTNER, United States, and resident of NewRochelle, in the county of Westchester and State of New York, haveinvented a new and useful Improvement in Devices for Cleaning Boilers,ofwhich the following is a specification.

This invention relates to a device for cleaning boilers, my moreparticular object being to produce a portable or removable device whichmaybe readily'inserted and attached to boilers, especially kitchen waterboilers now in common use, and which pro vides a simple and eflicientconstruction for accomplishing the work.

Another object is to provide a device which will be cheap to manufactureand easily assembled and taken apart for shipment or storage.

A further objects consists in providing certain improvements in theform, construction and arrangement of the several parts whereby theabove mentioned and other objects may be eii'ectively carried out.

Kitchen water boilers now in common use for storage and supply purposesrequire cleaning more or less frequently. This type of boiler is sealedat the top and bottom except for the inlet and outlet pipes. Thiscleaning operation usually requires that the boiler must first beemptied and then the labor of two or more men utilized to disconnect allfeed water pipes and remove the boiler from its stand or hanger, afterwhich the boiler must be replaced and refilled. This operation generallyconsumes from four to six hours. There is, hence, quite a large expenseinvolved in labor, time and loss-of water.

My invention includes improved means for effecting the mechanicalloosening of the sediment which is, drawn and washed out, while thedevice is being manipulated by the operator.

practical embodiment of my invention is represented in the accompanyingdrawings, in which- Figure 1 represents a side elevation of a kitchenboiler, partly in section, showing the inlet and service pipes as incommon use.

Fig. 2 represents a detail central section of the lower portion of aboiler with the spud, cleanout pipe and drain cock removed, and mydevice applied there n.

Fig. 3 represents a horizontal section taken in the plane of the line AAof Fig. l, and

Fig. 4 represents a horizontal section taken in the plane of the line BBof Fig. 1, looking in the direction of the arrows.

The boiler is denoted by 1, the feed pipe by 3, the service pipe by 4,the spud by 5 and cleanout or drain pipe by 6.

To apply my device, the spud 5 and cleanout pipe 6 are removed and inthe threaded hole where the'spud 5 was removed, I i11- sert a nipple 7.Upon this nipple 7 is screwed an elbow 8 having a worm or feed screw 9,which is provided with .a stem 10 extending downwardlythrough the elbowin position to receive an arm 11 removably secured thereto by means of acotter pin 12. This arm 11 forms a crank and for convenience I pivot at13 a handle 14, by which the crank is operated.

The upper end of the feed screw 9 is flattened, as shown at 15, to whichis pivotally secured a yielding breaker 16, which is bent to form aspiral so that in the rotation of the breaker, the sediment will bedislodged, broken up and forced toward the center, where it is drawnthrough the nipple 7 by the feed screw 9 into the elbow 8 and forced outthrough the outlet pipe 17 into a re ceptacle (not shown). The outer orfree end 18 of the breaker 16 is turned up, so that the sediment may bedislodged. at or near the vertical wall of the boiler.

Should the feed screw 9 become with sediment of a heavy nature,provision is made in the length of the stem 10 so that it may be raisedand lowered vertically in the elbow 8, thereby dislodging the same andfreeing the screw, or the screw may be rotated in the oppositedirection, which will force the sediment upwardly and thus clean thepassage.

After the feed screw 9, with its yielding breaker 16, has been rotatedsufliciently to loosen the sediment, water may be admitted to flush theboiler and thus wash such loose sediment that has not been drawn orpassed out through the screw. 7

I preferably make the breaker 16 of ma terial, such as spring steel, sothat if it should meet some obstacle that is too hard to remove, it willspring over it, thereby saving it from being bent or broken; at the sametime it will strike the sediment with a sharp blow as it springs by theobstacle,

clogged thus causing the sediment to be broken up more efficiently.

While I have shown the arm 11 as having a handle 14: pivoted thereto, itis not essential, as the arm 11 may be manipulated by the operatorwithout the handle. The handle 14: need only be used in places where itis diflicult to operate the arm, as, for instance, where the boiler islocated upon a stand, as shown in Figs. 1 and 2 of the drawings. It willalso, be understood that in cases where the spud 5 is not removed, theelbow 8, with the feed screw therein, may be screwed directly thereon.

It is obvious that various changes may be resorted to in the form,construction and arrangement of the several parts, without departingtromthe spirit and scope ofiny invention; hence I do not intend to limitmyself to the particular details herein shown and described except asthey may be set forth in the claims.

\Vhat I claim is: Y

1. A device of the character described comprising an elbow having aninlet and an outlet, a vertically disposed feed screw Copies interposedbetween said inlet and outlet, said teed screw having a stem journaledin said elbow and extending therethrough, a yielding spirally formedbreaker secured to the upper end of said teed screw above the inlet, andmeans on the lower end of the stem for manipulating the screw andbreaker.

' 2. A device of the character described comprising an elbow having aninlet and an outlet, a vertically disposed feed screw in terposedbetween said inlet and outlet, said feed screw having a stem journaledin said elbow and extending therethrough, a yielding spi "ally formedbreaker secured to the upper end of said feed screw above the inlet, thetree end of said breaker being pro vided with an upwardly turned end toengage the side walls of'th'e boileigand means on the lower end of saidstein for manipulating the screw and breaker.

In testimony that I claim the foregoing as my invention, I have signedmy name this th day of March, 1916.

LOUIS H. KETTNER.

of this patent may be obtained for five cents each, by addressing theCommissioner of Patents,

Washington, D. 0."

